SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which water does not readily from lather with soap and causes curdling of soap?
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Simple water
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Natural water
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Heavy water
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Hard water
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Explanation:
Detailed explanation-1: -Hard water is formed due to the dissolution of the salts of calcium and magnesium ions. It does not lather with soap because the salts of calcium and magnesium react with soap to form insoluble salts.
Detailed explanation-2: -Hard water does not lather with soap. So option ‘a’ is the correct answer.
Detailed explanation-3: -Here calcium chloride in the hard water reacts with the sodium stearate of soluble soap giving a precipitate of calcium stearate of insoluble soap and sodium chloride. Instead of lather, a precipitate is formed.
There is 1 question to complete.